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4	4	{{toc/}}
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6	6	= 1. Introduction =
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8	8	This chapter introduces how users can change the uplinkdwell time.
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15	15	[[image:image-20220527091341-1.png]]
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17	17	The device default uplinkdwelltime=1, there are SF7, SF8, SF9 and SF10.
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19	19	If users want to ues SF11 and SF12, they need to set uplinkdwelltime=0.
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21	21	Users can use AT commands to set uplinkdwell time.
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23		-[[image:https://wiki.dragino.com/images/thumb/b/bb/Uplinkdwelltime1.png/600px-Uplinkdwelltime1.png||alt="Uplinkdwelltime1.png" height="511" width="600"]]
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25		-[[image:https://wiki.dragino.com/images/thumb/7/78/Uplinkdwelltime2.png/600px-Uplinkdwelltime2.png||alt="Uplinkdwelltime2.png" height="301" width="600"]]
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27	27	= 3. Use AT command to set uplinkdwell time =
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29	29	Since Dragino LoRaWAN Stack DR_LWS_005, user is able to set the uplink Dwelltime in AS923 and AU915 manual or use a application side downlink command to set it.
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31		-* Use AT command: AT+DWELLT=0, set to Uplink Dwelltime=0.
32		-* Use AT command: AT+DWELLT=1, set to Uplink Dwelltime=1.
	37	+* Use AT command: (% style="color:#4f81bd" %)**AT+DWELLT=0**(%%), set to Uplink Dwelltime=0.
	38	+* Use AT command: (% style="color:#4f81bd" %)**AT+DWELLT=1**(%%), set to Uplink Dwelltime=1.
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34	34	Or via application downlink command:
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36		-* Downlink Payload: 0x2500, Set AT+DWELLT=0 to uplink.
37		-* Downlink Payload: 0x2501, Set AT+DWELLT=1 to uplink.
	42	+* Downlink Payload:** (% style="color:#4f81bd" %)0x2500(%%)**, Set AT+DWELLT=0 to uplink.
	43	+* Downlink Payload: (% style="color:#4f81bd" %)**0x2501**(%%), Set AT+DWELLT=1 to uplink.

image-20220527091503-3.png

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